Bump webob from 1.8.7 to 1.8.8

Bumps [webob](https://github.com/Pylons/webob) from 1.8.7 to 1.8.8.
- [Changelog](https://github.com/Pylons/webob/blob/main/CHANGES.txt)
- [Commits](Pylons/webob@1.8.7...1.8.8)

---
updated-dependencies:
- dependency-name: webob
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.dev.txt

@@ -43,7 +43,7 @@ tomli==2.0.1
     #   pyproject-hooks
 waitress==3.0.0
     # via webtest
-webob==1.8.7
+webob==1.8.8
     # via webtest
 webtest==3.0.0
     # via django-webtest